/* ===== 品牌档案页专属样式 ===== */
.page-about *,
.page-about *::before,
.page-about *::after {
  box-sizing: border-box;
}

/* ===== 品牌故事 Hero ===== */
.page-about .about-story {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding: calc(var(--header-height) + 48px) 0 80px;
  background:
    radial-gradient(circle at 82% 18%, rgba(255, 107, 53, 0.18), transparent 44%),
    var(--color-navy);
  color: var(--color-white);
}

.page-about .about-story::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(176, 184, 201, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(176, 184, 201, 0.08) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: linear-gradient(90deg, transparent 18%, #000 100%);
  mask-image: linear-gradient(90deg, transparent 18%, #000 100%);
}

.page-about .about-story::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 30vw;
  height: 100%;
  z-index: -1;
  background: linear-gradient(160deg, rgba(255, 107, 53, 0.32), rgba(255, 107, 53, 0.08) 48%, transparent 100%);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 24% 100%);
}

.page-about .about-story__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.page-about .about-story__content {
  max-width: 640px;
}

.page-about .about-story__eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-teal);
  border: 1px solid rgba(0, 194, 168, 0.4);
  border-radius: 999px;
  padding: 5px 14px;
  margin-bottom: 24px;
}

.page-about .about-story__title {
  margin: 0 0 10px;
  font-family: var(--font-headline);
  font-style: italic;
  font-weight: 900;
  font-size: clamp(2.25rem, 5vw, 4rem);
  line-height: 1.05;
  color: var(--color-white);
}

.page-about .about-story__subtitle {
  margin: 0 0 28px;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--color-orange);
}

.page-about .about-story__lead {
  margin: 0 0 20px;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-white);
}

.page-about .about-story__text {
  margin: 0 0 16px;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--color-slate);
}

.page-about .about-story__quote {
  margin: 20px 0 24px;
  padding: 18px 22px;
  border-left: 4px solid var(--color-orange);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(255, 107, 53, 0.1);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--color-light);
}

.page-about .about-story__quote-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-orange);
  margin-bottom: 6px;
}

.page-about .about-story__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.page-about .about-story .btn--ghost {
  border-color: rgba(176, 184, 201, 0.5);
  color: var(--color-white);
}

.page-about .about-story .btn--ghost:hover {
  border-color: var(--color-teal);
  color: var(--color-teal);
}

.page-about .about-story__visual {
  position: relative;
}

.page-about .about-story__figure {
  margin: 0;
  position: relative;
}

.page-about .about-story__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 26px 100%, 0 calc(100% - 26px));
}

.page-about .about-story__figcaption {
  margin-top: 12px;
  font-size: 0.8125rem;
  color: var(--color-slate);
  text-align: right;
}

/* ===== 发展里程碑 + 核心能力 ===== */
.page-about .about-journey {
  padding: 80px 0;
  background: var(--color-light);
}

.page-about .about-journey__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 64px;
}

.page-about .about-section-head {
  margin-bottom: 36px;
}

.page-about .about-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-orange);
  margin-bottom: 10px;
}

.page-about .about-section-title {
  margin: 0 0 8px;
  font-family: var(--font-headline);
  font-weight: 900;
  font-style: italic;
  font-size: clamp(1.75rem, 3.4vw, 2.6rem);
  line-height: 1.15;
  color: var(--color-navy);
}

.page-about .about-section-sub {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-slate);
}

.page-about .about-section-head .diag-line {
  margin: 14px 0;
}

/* 时间轴 */
.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 6px 0 0 30px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 6px;
  width: 2px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--color-orange) 0%, var(--color-teal) 100%);
}

.page-about .about-timeline__item {
  position: relative;
  margin-bottom: 28px;
}

.page-about .about-timeline__marker {
  position: absolute;
  left: -30px;
  top: 10px;
  width: 14px;
  height: 14px;
}

.page-about .about-timeline__dot {
  display: block;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-orange);
  border: 3px solid var(--color-light);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.28);
}

.page-about .about-timeline__card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 22px;
  transition: border-color var(--ease), box-shadow var(--ease), transform var(--ease);
}

.page-about .about-timeline__item:hover .about-timeline__card {
  border-color: var(--color-teal);
  box-shadow: var(--shadow-sm);
  transform: translateX(4px);
}

.page-about .about-timeline__year {
  display: inline-block;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 0.8125rem;
  color: var(--color-orange);
  background: rgba(255, 107, 53, 0.12);
  border-radius: 999px;
  padding: 3px 10px;
}

.page-about .about-timeline__head {
  margin: 10px 0 8px;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-navy);
}

.page-about .about-timeline__desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--color-slate);
}

/* 横幅配图 */
.page-about .about-banner {
  margin: 36px 0 0;
}

.page-about .about-banner__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 1;
  object-fit: cover;
  border-radius: var(--radius);
}

.page-about .about-banner__caption {
  margin-top: 10px;
  font-size: 0.8125rem;
  color: var(--color-slate);
}

/* 数据指标 */
.page-about .about-metrics {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-metric {
  background: linear-gradient(150deg, var(--color-navy-deep) 0%, var(--color-navy) 100%);
  border-radius: var(--radius);
  padding: 22px 24px;
  border-top: 3px solid var(--color-orange);
  color: var(--color-white);
  transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
}

.page-about .about-metric:nth-child(2n) {
  border-top-color: var(--color-teal);
}

.page-about .about-metric:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-top-color: var(--color-orange);
}

.page-about .about-metric__num {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: clamp(1.875rem, 4vw, 2.6rem);
  line-height: 1.15;
  color: var(--color-orange);
  letter-spacing: -0.02em;
}

.page-about .about-metric:nth-child(2n) .about-metric__num {
  color: var(--color-teal);
}

.page-about .about-metric__num span {
  font-size: 0.55em;
  margin-left: 2px;
  color: var(--color-white);
  opacity: 0.85;
}

.page-about .about-metric__label {
  margin-top: 2px;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-white);
}

.page-about .about-metric__desc {
  margin: 8px 0 0;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--color-slate);
}

/* ===== 资质与认证 ===== */
.page-about .about-cert {
  padding: 80px 0;
  background: var(--color-navy);
  color: var(--color-white);
}

.page-about .about-cert .about-section-title {
  color: var(--color-white);
}

.page-about .about-cert .about-section-sub {
  color: var(--color-slate);
}

.page-about .about-cert .about-eyebrow {
  color: var(--color-teal);
}

.page-about .about-cert__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 12px;
}

.page-about .about-cert__card {
  position: relative;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: background var(--ease), border-color var(--ease), transform var(--ease);
}

.page-about .about-cert__card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 3px;
  border-radius: 3px;
  background: var(--color-teal);
}

.page-about .about-cert__card:nth-child(2)::before {
  background: var(--color-orange);
}

.page-about .about-cert__card:hover {
  border-color: rgba(0, 194, 168, 0.5);
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.1);
}

.page-about .about-cert__icon {
  display: block;
  margin-bottom: 16px;
}

.page-about .about-cert__head {
  margin: 0 0 10px;
  font-size: 1.125rem;
  color: var(--color-white);
}

.page-about .about-cert__desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-slate);
}

/* ===== 合作生态 ===== */
.page-about .about-partners {
  padding: 80px 0;
  background: var(--color-light);
}

.page-about .about-partners__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}

.page-about .about-partners__content .about-section-head {
  margin-bottom: 20px;
}

.page-about .about-partners__text {
  margin: 0 0 16px;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: #44506B;
}

.page-about .about-partners__link {
  display: inline-block;
  margin-top: 8px;
  font-weight: 700;
}

.page-about .about-partners__figure {
  margin: 0;
  position: relative;
}

.page-about .about-partners__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 0 100%);
}

.page-about .about-partners__figcaption {
  margin-top: 12px;
  font-size: 0.8125rem;
  color: var(--color-slate);
}

/* ===== 断点 ===== */
@media (min-width: 640px) {
  .page-about .about-metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about .about-cert__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .about-cert__card {
    padding: 24px 20px;
  }
}

@media (min-width: 993px) {
  .page-about .about-story {
    padding: calc(var(--header-height) + 72px) 0 96px;
  }

  .page-about .about-story__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: 72px;
    align-items: center;
  }

  .page-about .about-journey__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 80px;
  }

  .page-about .about-timeline__card {
    padding: 22px 28px;
  }

  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: 72px;
  }
}